Take-up mechanism for looms.



A. RHOADES. TAKE-UP MECHANISM FOR. LOOKS.

APPLICATION Hum we. 9, 1909.

Patented Feb. 1, 1910.

ANDREW. a smum cm, PIEOYU-UTHOGMPHERS wnsmnmcm. D a

UNITED STATES PATENT oEEIoE.

ALONZO E. RHOADES, F HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COM-PANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

TAKE UP MECHANISM FOR LOOMS;

To all whom it may concern:

Be it known that I, ALoNzo E. RHOADES, a citizen of the United States,and resident of Hopedale, county of Worcester, State of Massachusetts,have invented an Improvement in Take-Up Mechanism for Looms,;of whichthe following description, in connection with the accompanying drawing,is a specification, like characters on the drawing representing likeparts.

This invention has for its object the pro duction of take-up mechanismfor looms of simple and efiicient construction and so arranged that theamount of cloth to be taken up at each pick can be readily and quicklyadjusted without the use of change-gears or similar devices.

The take-up instrumentality is actuated from a going part of the loom,such, for instance, as a lay-sword, connected with a vibrating memberwhich operates the pawlcarrier and the take-up pawl, the latter beingmoved automatically into and out of engagement with a ratchet from whichrotative movement is transmitted to the take-up or sand-roll.

As will appear hereinafter the mechanism is simple and very direct inits operation.

The various novel features of the invention will be fully described inthe subjoined specification and particularly pointed out in thefollowing claims. 7 Figure 1 is a front elevation of a portion of a loomhaving applied thereto take-up mechanism embodying one practical form ofmy invention; Fig. 2 is a left-hand side elevation of the mechanism atthe right of the dotted line 22, Fig. 1, and showing more clearly thenovel features of the invention; Fig. 3 is an inner side view of theratchet, pawl-carrier and take-up pawl thereon, taken on the line 3-3,Fig. 1; Fig. 4: is a sectional detail on the line l-l, Fig. 3; Fig. 5 isa perspective view of the take-up pawl, detached.

In Fig. 1 of the drawing 1 is the usual take-up or sand-roll, having anattached gear 2 meshing with a larger gear 3 mounted on the loom-side 4and driven by a pinion 5 having an attached larger pinion 6 meshing witha pinion 7 provided with an elongated hub 8, Fig. 4, the train ofgearing between pinion 7 and the take-up roll being of usualconstruction. Said pinion 7 is mounted to rotate on a stud 9 extendedlaterally from a Specification of Letters Patent.

Application filed August 9, 1909.

Patented Feb. 1, 1910.

Serial No. 511,843.

bracket 1O on the usual frame 10 which forms a guide for the cloth-roll,(not shown) the frame being set in from the loom-side in usual mannerand forming no novel part of this invention. The hub 11 of a tootheddisk or ratchet 12 receives and is fixedly secured to the pinion hub 8,the ratchet hub 11 being located adjacent the outer side of the guideframe 10. A metallic collar 13 loosely surrounds the hub 11 and is heldfrom rotation by a pin 14, Figs. 3 and 4, extended from the frame 10,the collar provid ing a fixed fulcrum for a swinging pawlcarrier 15,having a two-part head 16, 17

embracing the collar, the parts being held together yieldingly by a studl8, surrounding spring 19 and checlcnuts 20, clearly shown in Fig. 3. ii v The part 17 seats in a socket 21 in the pawl-carrier, and by settingup or letting off the nuts the pressure of the head upon the fulcrum isincreased or diminished, a friction ring 22 of leather or other suitablematerial being interposed between the collar 13 and the concave faces ofthe head. The lower end of the depending pawl-carrier is enlarged andprovided with an elongated aperture 23 to loosely receive a lateral lug24c on the tail 25 of the take-up pawl 26, ful

crumed at 27 on the pawl-carrier. Said lug has some play from side toside in the aperture 23, as shown, and as the pivot 27 is above theaperture the swinging movement of the pawl on its pivot permits thepoint of the pawl to be moved into and out of engagement with the teeth'of the ratchet 12, as will be evident, the clearance between the lug 24-and the sides of the aperture 23 being sufficient for the purpose. Thusthe pawl is movable with the pawl-carrier 15 and it is also movablerelatively thereto, and owing to the retarding action of the frictioncon nection between the pawl-carrier and its fulcrum, previouslydescribed, the pawl will be moved on its pivot 27 in one or the otherdirection before movement in unison with the pawl-carrier begins, thepower being applied at the tail of the pawl. To this end the lug 24. isprovided with an elongated slot 28 which receives a stud 29 projectinglaterally from a slightly curved vibrating member or arm 30 fulcrumed atits lower end at 31 on a part of the loom-frame, said member having asegmental slot 32 formed therein. The slot receives the shank of ashouldered coupling pin 33, held in adjusted position on the member 30by a suitable nut 34, Fig. 1, so that the coupling pin can be movedtoward or from the fulcrum 31. A hub 35 of a link 36 is loosely mountedon the pin and held thereon by a cotter-pin 37 or other suitable device,the rear end of the link being pivotally connected at 38 to a going partof the loom mechanism, herein shown as one of the lay-swords 39. n V

The laysword swings forward at each pick and hence provides a convenientand proper means for effecting the feed movement of the take-up, for asthe lay heats up the link 36 operates to swing forward the vibrator 30,and the latter, through its slot and pin connection with the pawl, firstrocks the pawl 26 on its pivot 27 into engagement with the ratchet 12,and then as the vibrator continues its forward movement the pawlcarrier15 and pawl are swung in unison, to effect the feed stroke of the pawl.As the lay swings back the vibrator 30 is swung back with it, the pawlbeing lifted out of engagement with the ratchet teeth before the returnstroke of the pawl-carrier and pawl is actually begun. Thisdisengagement of the pawl from the ratchet reduces the wear on bothparts, as there is no clicking or drawing back of the pawl over theteeth.

It will now be seen that the friction connection between the pawlcarrier and its fulcrum is necessary to allow the movement of the pawlrelatively to the pawl carrier at each end of the stroke of thepawl-carrier before movement of the latter begins, and it will bemanifest that the lost motion between the pawl and pawl-carrier at suchtime performs an important function.

On the return stroke of the vibrator the engagement of the hub 24 withthe side of the aperture 23 effects the retraction of the pawl-carrier,while on the feed stroke such engagement is not so necessary, for thenthe pawl is in firm engagement with a ratchet tooth.

If the effective or feed stroke of the takeup pawl is to be lengthened,to take up more cloth on each pick then the coupling between the link 36and the vibrator 30 is moved nearer the fulcrum 31 of the latter, whilethe shortest feed stroke is attained by setting the coupling at theextreme upper end of the slot 32, the stroke of the actuator, that is,the lay-sword being constant at all times.

The adjustment is easily and quickly made, as will be apparent, and avery accurate adjustment can be effected by the mechanism shown withoutthe employment of cumbersome change-gears or similar devices.

A detent pawl 40 engages the ratchet 12, see Fig. 2, and said pawl isbifurcated to receive the let-back pawl 41, a lug 42 on the pawl 40being arranged to be engaged and lifted by an arm 43 on the usualcontrolling shaft 44 commonly employed in automatic filling replenishinglooms, so that when said shaft is turned, to effect loom stoppage orfilling replenishment, as the case may be, the detent pawl 40 isrendered inoperative and the let-back pawl 41 assumes control of thetake-up. A similar arrangement of detent and let-back pawls with meansto dis engage the detent pawl, is shown in Patent No. 643,284 grantedFebruary 13, 1900 to Clement and such device per se is not of myinvention and no claim thereto is made herein.

If the let-back pawl is arranged to let back a certain number of teeth,correspond ing to the feed of the take-up pawl it will be apparent thattake-up will be arrested when the detent pawl is rendered inoperative,for the ratchet will then turn back at each pick just as far as it hasbeen turned forward, and no cloih will be taken up.

My invention is not restricted to the details of construction andarrangement herein shown and described as forming one practicalembodiment of my invention, for various changes or modifications may bemade by those skilled in the art without departing from the spirit andscope of my invention as set forth in the claims annexed hereto.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In take-up mechanism for looms, thecombination, with a ratchet, and its actuating pawl, of a pawl-carrierfulcrumed coaxially with the ratchet and on which carrier the pawl ispivoted, means to limit pivotal movement of the pawl relatively to thepawl-carrier, to efiect engagement or disengagement of the pawl andratchet, a vibrating member pivotally connected with the pawl and actingfirst to rock it relatively to the pawl-carrier and then to swing thelatter as a unit with the pawl, and a friction device to retard movementof the pawl-carrier until relative movement of the pawl is completed.

2. The combination, with a take-up ratchet, and its actuating pawl, of apawl carrier fulcrumed coaxially with the ratchet, said pawl beingpivotally mounted on the pawl-carrier, means to limit such pivotalmovement of the pawl while permitting it to engage .or be disengagedfrom the ratchet, a vibrator operatively connected with the pawl, tofirst effect relative movement thereof and then movement bodily with thepawlcarrier, and means to retard the movement of the latter at each endof its stroke, to in- 7 beyond its pivot, the pawl being movable on thepawl-carrier into and out of cooperation with the ratchet, a vibratingarm pivotally connected with the pawl tail, to rock the pawl and thenthrough it to swing the pawl-carrier on its fulcrum, means to limitrelative movement of said pawl and pawlcarrier, and means to vary theamplitude of movement of the vibrating arm, to thereby increase ordecrease the active stroke of the pawl-carrier.

4. In takeup mechanism for looms, in combination, a ratchet and itsactuating pawl, an oscillating pawl-carrier on which the pawl has alimited relative movement, means to effect such movement of the pawl tocause it to engage with or be disengaged from the ratchet and thereafterto move the pawl and pawl-carrier in unison, and means to retardmovement of the pawl-carrier until movement of the pawl relativelythereto has been effected.

5. In take-up mechanism for looms, in combination, a ratchet and itsactuating pawl, an oscillating pawl-carrier 011 which the pawl has alimited relative movement, means to elfect such movement of the pawl tocause it to engage with or be disengaged from the ratchet and thereafterto move the pawl and pawl-carrier in unison, and manually adjustablefriction means to retard movement of the pawl-carrier until relativemovement of the pawl has been effected.

6. In take-up mechanism for looms, in combination, a ratchet, apawl-carrier, a pawl mounted thereon and movable relatively thereto to alimited extent, a vibrating member operatively connected with said pawl,to move it relatively to the pawl-carrier into and out of engagementwith the ratchet and then to effect movement of the pawl andpawl-carrier in unison, and means to retard movement of the latter aftereach bodily movement of the pawl-carrier and pawl, to enable therelative movement of the latter to be effected.

7. In a loom, a take-up ratchet, its actuating pawl, a swingingpawl-carrier on which the pawl is mounted and relative to which it haslimited movement, to engage or be disengaged from the ratchet, avibrator pivotally connected with the pawl, to first cause relativemovement thereof and then movement in unison with the pawl-carrier, agoing part of the loom, a link connecting it with the vibrator, tovibrate the latter, and an adjustable coupling between said link andvibrator, to increase or decrease the amplitude of its vibrations andthereby vary the stroke of the pawlcarrier.

S. In a loom, a take-up ratchet, its actuating pawl, a swingingpawl-carrier on which the pawl is mounted and relative to which it has alimited movement, to engage or be disengaged from the ratchet, avibrator having a fixed fulcrum and pivotally connected with the pawl,to cause relative movement thereof and then movement in unison with thepawl-carrier, a friction detent to retard the latter at each change inthe direction of movement of the vibrator, and means to increase ordecrease the amplitude of vibration of the latter, to thereby vary theadvance movement of the ratchet.

9. In a loom, a take-up ratchet, its actuating pawl, a swingingpawl-carrier on which the pawl is mounted and relative to which it has alimited movement, to engage or be disengaged from the ratchet, avibrator having a fixed fulcrum and pivotally connected with the pawl,to cause relative movement thereof and then movement in unison with thepawl-carrier, a friction detent to retard the latter at each change inthe direction of movement of the vibrator, a lay-sword, a link connectedat one end therewith, and a coupling connecting the other end of thelink and the vibrator and, adjustable on the latter towardand from itsfnlcrrun, to vary the amplitude of movement of the vibrator.

10. The combination with the ratchet of a loom take-up, of a swingingpawl-carrier, a

fixed fulcrum therefor coaxial with the ratchet, a friction connectionbetween the pawl-carrier and its fulcrum, a pawl pivoted on thepawl-carrier and movable into and out of engagement with the ratchet,means to limit such movement, and means acting through the pawl to firstrock it relatively to the pawl-carrier and then to move it in unisonwith the pawl-carrier, to effect feed movement of the ratchet, thefriction con nection holding the pawl-carrier from movement untilrelative movement of the pawl is effected.

11. The combination with the ratchet of a loom take-up, of a swingingpawl-carrier, a fixed fulcrum therefor coaxial with the ratchet, afriction. connection between the pawLcarrier and its fulcrum, a pawlpivoted on the pawl-carrier and movable into and out of engagement withthe ratchet, means to limit such movement, and manually adj ustablemeans acting through the pawl to first rock it relatively to thepawl-carrier and then to move it in unison with the pawlcarrier, toeffect feed movement of the ratchet, the friction connection holding thepawl-carrier from movement until. relative movement of the pawl iseffected.

12. The combination with the ratchet of a loom take-up, of a swingingpawl-carrier, a fixed fulcrum therefor coaxial with the ratchet, anadjustable friction connection between the pawl-carrier and its fulcrum,a pawl pivoted on the pawl-carrier and movable into and out ofengagement with the ratchet, means to limit such movement, and meansacting through the pawl to first rock it relatively to the pawl-carrierand then to move it in unison with the pawl-carrier, to effect feedmovement of the ratchet, the friction connection holding thepawl-carrier from movement until relative movement of the pawl iseffected.

13. The combination with the ratchet of a loom take-up, of a swingingpawl-carrier having a compressible head and apertured at its free end, afixed collar coaxial with the ratchet and acting as a fulcrum for thepawl-carrier, 'a friction band interposed between said collar and thehead, a pawl pivoted on the pawl-carrier and having a tail provided withan enlargement entering and having limited movement in the aperture, toenable the pawl to engage or be disengaged from the ratchet, and avibrator having a slot and pin connection with the en largement of thepawl tail, to first rock the pawl on its pivot and then move the pawland pawl-carrier in unison.

14. In a take-up mechanism, in combination, a ratchet, detent andlet-back pawls therefor, means to disengage the detent pawl and permitthe let-backpawl to control the ratchet, an actuating pawl, apawl-carrier fulcrumed coaxially with the ratchet and on which theactuating pawl is pivoted, means to limit relative movement of the saidpawl on the pawl-carrier, a vibrator connected name to thisspecification, in the presence of 7 two subscribing witnesses.

ALONZO E. RHOADES.

Witnesses ROBERT J AMIESON, E. D. OSGOOD.

